officials admit there's work to do. >> the president believes the site has been significantly improved, and that the teams in place have worked 24/7 for weeks now to make those improvements, including significant improvements made over the weekend. but the work is not done. >> well, in a column for u.s.a. today, today, we got this word from the health and human services secretary who says potential customers should wait until off peak hours, morning, evening, and weekends. well, so how does the web site work at 3:00 p.m. on a monday? if i can get this thing to work over here i do that. how die do -- do i do that, shift, shift, zero. well, if the computer would work i could tell you. i can tell you even if you can't log on, you, always enroll over the phone or in person, but analysts say the web site plays a crucial role.